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brown recluse · 07-14-2009

There's a lot of others who are better at carbs, but I'll try. The others will be along to correct me in a minute. The float should rise as the carb bowl fills with gasoline. Once the float reaches a certain point it lifts a needle that stops the gas from entering the float bowl. The thing that needs adjusting is the tang. The tang is just a little metal tab that pushes the needle up. If the tang is set too low then the bowl over flows with gas. If the tang is set too high, then the needle rises too soon and there's not enough gas in the bowl to feed the engine.

Adjusting the tang is just a matter of bending it. Setting the float height is difficult to get exactly right. It varies some but most of the time, the gas level when the float cuts off the gas flow should be about 5mm below the top of the bow. Confused yet?

07-14-2009	#13 (permalink)
brown recluse Vulcan 500 Rider BTK Intermediate Join Date: Oct 2006 Location: South East US. Posts: 153	There's a lot of others who are better at carbs, but I'll try. The others will be along to correct me in a minute. The float should rise as the carb bowl fills with gasoline. Once the float reaches a certain point it lifts a needle that stops the gas from entering the float bowl. The thing that needs adjusting is the tang. The tang is just a little metal tab that pushes the needle up. If the tang is set too low then the bowl over flows with gas. If the tang is set too high, then the needle rises too soon and there's not enough gas in the bowl to feed the engine. Adjusting the tang is just a matter of bending it. Setting the float height is difficult to get exactly right. It varies some but most of the time, the gas level when the float cuts off the gas flow should be about 5mm below the top of the bow. Confused yet? Last edited by brown recluse : 07-14-2009 at 05:43 PM.